Letters: Sub Operation and Zeisel's SparkListeners say they have been inspired by recent stories on Weekend All Things Considered. Among the subjects: a Navy serviceman who performed an emergency appendectomy aboard a submarine in enemy waters during World War II; and Saturday's profile of designer Eva Zeisel.

Listeners say they have been inspired by recent stories on Weekend All Things Considered. Among the subjects: a Navy serviceman who performed an emergency appendectomy aboard a submarine in enemy waters during World War II; and Saturday's profile of designer Eva Zeisel.